MPEC 2015-X87 : 2004 AC
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M.P.E.C. 2015-X87 Issued 2015 Dec. 7, 22:04 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2004 AC
Revision to MPEC 2004-A22
Additional Observations:
K04A00C C2015 12 05.21906 01 39 20.831+26 26 32.65 21.1 wLEX087F51
K04A00C C2015 12 05.23007 01 39 19.407+26 26 26.60 20.8 wLEX087F51
K04A00C C2015 12 05.24115 01 39 17.968+26 26 20.56 20.9 wLEX087F51
K04A00C C2015 12 05.25230 01 39 16.536+26 26 14.31 20.9 wLEX087F51
K04A00C _C2015 12 06.29656901 37 07.452+26 16 26.01 20.2 RtEX087568
K04A00C _C2015 12 06.29764501 37 07.314+26 16 25.36 20.2 RtEX087568
K04A00C _C2015 12 06.29873601 37 07.179+26 16 24.77 20.2 RtEX087568
K04A00C KC2015 12 06.33413 01 37 02.33 +26 16 01.1 21.2 RoEX087291
K04A00C KC2015 12 06.33667 01 37 02.04 +26 16 00.1 20.9 RoEX087291
K04A00C KC2015 12 06.33923 01 37 01.73 +26 15 58.3 21.1 RoEX087291
K04A00C KC2015 12 07.77567 01 34 11.14 +26 02 22.8 tEX087595
K04A00C KC2015 12 07.81121 01 34 06.90 +26 02 02.7 20.8 VtEX087595
Observer details:
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
568 Mauna Kea. Observers R. J. Wainscoat, L. Wells. Measurers M. Micheli,
R. J. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.61-m f/4.0 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers B. Gibson, T. Goggia, N. Primak,
A. Schultz, M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau,
H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters,
R. Weryk. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
151205 F51 6.57+ 8.37+ 151207 595 6.05+ 8.24+ MPO 58114 -34 day
Orbital elements:
2004 AC Earth MOID = 0.1951 AU
Epoch 2016 Jan. 13.0 TT = JDT 2457400.5 MPC
M 326.90083 (2000.0) P Q
n 0.40758315 Peri. 171.33984 -0.99557045 +0.08144118
a 1.8016008 Node 13.60100 -0.09369146 -0.81774691
e 0.6722368 Incl. 11.52327 -0.00783543 -0.56978709
P 2.42 H 18.8 G 0.15 U 3
Residuals in seconds of arc
040104 704 0.0 1.0+ 040105 938 0.5- 1.3+ 040109 448 0.3+ 0.2-
040104 704 0.4+ 0.8+ 040105 938 0.5+ 0.2+ 040109 448 1.0+ 0.4-
040104 704 0.5- 0.1- 040105 938 1.3- 0.2+ 040116 J95 0.2+ 0.4+
040104 704 0.1- 0.4+ 040105 938 (1.9- 0.8+) 040116 J95 0.6- 0.0
040104 704 0.7+ 0.7+ 040106 926 0.0 0.2+ 040116 J95 0.0 0.0
040104 704 1.0+ 1.3+ 040106 926 0.5+ 0.5- 151205 F51 0.0 0.1-
040104 704 1.1- 0.0 040106 926 0.8- 0.6- 151205 F51 0.1- 0.1-
040104 704 0.1- 0.0 040107 448 0.7- 0.1+ 151205 F51 0.2- 0.0
040104 704 0.2+ 0.5- 040107 448 0.4- 0.0 151205 F51 0.1- 0.1-
040104 704 0.0 0.4- 040107 448 0.1+ 0.1- 151206 568 0.1+ 0.2-
040105 673 0.4- 0.1- 040107 926 0.2- 0.2- 151206 568 0.0 0.2-
040105 673 0.5- 0.1- 040107 926 0.1- 0.0 151206 568 0.1+ 0.2-
040105 673 0.3- 0.0 040107 926 0.6- 0.3+ 151206 291 0.4- 0.1+
040105 673 0.1- 0.0 040108 J95 0.3+ 0.5- 151206 291 0.0 0.6+
040105 673 0.2- 0.2- 040108 J95 0.7+ 0.7- 151206 291 0.0 0.3+
040105 673 0.4- 0.1+ 040109 673 (2.4- 0.4-) 151207 595 1.0+ 0.0
040105 926 0.4+ 0.3+ 040109 673 (2.4- 0.1+) 151207 595 1.4+ 0.0
040105 926 0.3+ 0.1+ 040109 673 (1.3- 1.7-)
040105 926 (1.7- 0.4-) 040109 448 0.5- 0.1+
Ephemeris:
2004 AC a,e,i = 1.80, 0.67, 12 q = 0.5905
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2015 11 07 02 47 47.9 +29 12 11 1.0026 1.9807 166.8 6.5 20.8
...
2015 11 22 02 10 25.4 +28 15 30 0.9125 1.8601 156.4 12.3 20.7
...
2015 11 30 01 50 52.5 +27 13 50 0.8908 1.7921 145.3 18.2 20.8
...
2015 12 06 01 37 43.8 +26 19 13 0.8848 1.7394 136.8 22.8 20.8
2015 12 07 01 35 42.7 +26 09 47 0.8845 1.7304 135.4 23.6 20.8
2015 12 08 01 33 44.9 +26 00 19 0.8844 1.7215 134.0 24.3 20.8
...
2015 12 14 01 23 11.6 +25 04 01 0.8874 1.6667 125.8 28.6 20.9
...
2015 12 22 01 12 36.7 +23 55 31 0.8981 1.5913 115.4 33.9 21.0
...
2016 01 06 01 03 17.3 +22 27 08 0.9243 1.4422 98.2 42.4 21.1
A. U. Tomatic (C) Copyright 2015 MPC M.P.E.C. 2015-X87
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